diff options
Diffstat (limited to 'drivers/staging/iio/ring_sw.c')
| -rw-r--r-- | drivers/staging/iio/ring_sw.c | 69 |
1 files changed, 25 insertions, 44 deletions
diff --git a/drivers/staging/iio/ring_sw.c b/drivers/staging/iio/ring_sw.c index feb84e27c362..66a34addb75f 100644 --- a/drivers/staging/iio/ring_sw.c +++ b/drivers/staging/iio/ring_sw.c @@ -30,10 +30,10 @@ * @use_lock: lock to prevent change in size when in use * * Note that the first element of all ring buffers must be a - * struct iio_ring_buffer. + * struct iio_buffer. **/ struct iio_sw_ring_buffer { - struct iio_ring_buffer buf; + struct iio_buffer buf; unsigned char *data; unsigned char *read_p; unsigned char *write_p; @@ -52,7 +52,7 @@ static inline int __iio_allocate_sw_ring_buffer(struct iio_sw_ring_buffer *ring, { if ((length == 0) || (bytes_per_datum == 0)) return -EINVAL; - __iio_update_ring_buffer(&ring->buf, bytes_per_datum, length); + __iio_update_buffer(&ring->buf, bytes_per_datum, length); ring->data = kmalloc(length*ring->buf.bytes_per_datum, GFP_ATOMIC); ring->read_p = NULL; ring->write_p = NULL; @@ -71,7 +71,7 @@ static inline void __iio_free_sw_ring_buffer(struct iio_sw_ring_buffer *ring) kfree(ring->data); } -static void iio_mark_sw_rb_in_use(struct iio_ring_buffer *r) +static void iio_mark_sw_rb_in_use(struct iio_buffer *r) { struct iio_sw_ring_buffer *ring = iio_to_sw_ring(r); spin_lock(&ring->use_lock); @@ -79,7 +79,7 @@ static void iio_mark_sw_rb_in_use(struct iio_ring_buffer *r) spin_unlock(&ring->use_lock); } -static void iio_unmark_sw_rb_in_use(struct iio_ring_buffer *r) +static void iio_unmark_sw_rb_in_use(struct iio_buffer *r) { struct iio_sw_ring_buffer *ring = iio_to_sw_ring(r); spin_lock(&ring->use_lock); @@ -166,7 +166,7 @@ static int iio_store_to_sw_ring(struct iio_sw_ring_buffer *ring, return ret; } -static int iio_read_first_n_sw_rb(struct iio_ring_buffer *r, +static int iio_read_first_n_sw_rb(struct iio_buffer *r, size_t n, char __user *buf) { struct iio_sw_ring_buffer *ring = iio_to_sw_ring(r); @@ -297,7 +297,7 @@ error_ret: return ret; } -static int iio_store_to_sw_rb(struct iio_ring_buffer *r, +static int iio_store_to_sw_rb(struct iio_buffer *r, u8 *data, s64 timestamp) { @@ -327,13 +327,13 @@ again: return 0; } -static int iio_read_last_from_sw_rb(struct iio_ring_buffer *r, +static int iio_read_last_from_sw_rb(struct iio_buffer *r, unsigned char *data) { return iio_read_last_from_sw_ring(iio_to_sw_ring(r), data); } -static int iio_request_update_sw_rb(struct iio_ring_buffer *r) +static int iio_request_update_sw_rb(struct iio_buffer *r) { int ret = 0; struct iio_sw_ring_buffer *ring = iio_to_sw_ring(r); @@ -354,13 +354,13 @@ error_ret: return ret; } -static int iio_get_bytes_per_datum_sw_rb(struct iio_ring_buffer *r) +static int iio_get_bytes_per_datum_sw_rb(struct iio_buffer *r) { struct iio_sw_ring_buffer *ring = iio_to_sw_ring(r); return ring->buf.bytes_per_datum; } -static int iio_set_bytes_per_datum_sw_rb(struct iio_ring_buffer *r, size_t bpd) +static int iio_set_bytes_per_datum_sw_rb(struct iio_buffer *r, size_t bpd) { if (r->bytes_per_datum != bpd) { r->bytes_per_datum = bpd; @@ -370,12 +370,12 @@ static int iio_set_bytes_per_datum_sw_rb(struct iio_ring_buffer *r, size_t bpd) return 0; } -static int iio_get_length_sw_rb(struct iio_ring_buffer *r) +static int iio_get_length_sw_rb(struct iio_buffer *r) { return r->length; } -static int iio_set_length_sw_rb(struct iio_ring_buffer *r, int length) +static int iio_set_length_sw_rb(struct iio_buffer *r, int length) { if (r->length != length) { r->length = length; @@ -385,23 +385,16 @@ static int iio_set_length_sw_rb(struct iio_ring_buffer *r, int length) return 0; } -static int iio_mark_update_needed_sw_rb(struct iio_ring_buffer *r) +static int iio_mark_update_needed_sw_rb(struct iio_buffer *r) { struct iio_sw_ring_buffer *ring = iio_to_sw_ring(r); ring->update_needed = true; return 0; } -static void iio_sw_rb_release(struct device *dev) -{ - struct iio_ring_buffer *r = to_iio_ring_buffer(dev); - iio_ring_access_release(&r->dev); - kfree(iio_to_sw_ring(r)); -} - -static IIO_RING_ENABLE_ATTR; -static IIO_RING_BYTES_PER_DATUM_ATTR; -static IIO_RING_LENGTH_ATTR; +static IIO_BUFFER_ENABLE_ATTR; +static IIO_BUFFER_BYTES_PER_DATUM_ATTR; +static IIO_BUFFER_LENGTH_ATTR; /* Standard set of ring buffer attributes */ static struct attribute *iio_ring_attributes[] = { @@ -413,21 +406,12 @@ static struct attribute *iio_ring_attributes[] = { static struct attribute_group iio_ring_attribute_group = { .attrs = iio_ring_attributes, + .name = "buffer", }; -static const struct attribute_group *iio_ring_attribute_groups[] = { - &iio_ring_attribute_group, - NULL -}; - -static struct device_type iio_sw_ring_type = { - .release = iio_sw_rb_release, - .groups = iio_ring_attribute_groups, -}; - -struct iio_ring_buffer *iio_sw_rb_allocate(struct iio_dev *indio_dev) +struct iio_buffer *iio_sw_rb_allocate(struct iio_dev *indio_dev) { - struct iio_ring_buffer *buf; + struct iio_buffer *buf; struct iio_sw_ring_buffer *ring; ring = kzalloc(sizeof *ring, GFP_KERNEL); @@ -435,24 +419,21 @@ struct iio_ring_buffer *iio_sw_rb_allocate(struct iio_dev *indio_dev) return NULL; ring->update_needed = true; buf = &ring->buf; - iio_ring_buffer_init(buf, indio_dev); + iio_buffer_init(buf, indio_dev); __iio_init_sw_ring_buffer(ring); - buf->dev.type = &iio_sw_ring_type; - buf->dev.parent = &indio_dev->dev; - dev_set_drvdata(&buf->dev, (void *)buf); + buf->attrs = &iio_ring_attribute_group; return buf; } EXPORT_SYMBOL(iio_sw_rb_allocate); -void iio_sw_rb_free(struct iio_ring_buffer *r) +void iio_sw_rb_free(struct iio_buffer *r) { - if (r) - iio_put_ring_buffer(r); + kfree(iio_to_sw_ring(r)); } EXPORT_SYMBOL(iio_sw_rb_free); -const struct iio_ring_access_funcs ring_sw_access_funcs = { +const struct iio_buffer_access_funcs ring_sw_access_funcs = { .mark_in_use = &iio_mark_sw_rb_in_use, .unmark_in_use = &iio_unmark_sw_rb_in_use, .store_to = &iio_store_to_sw_rb, |